CMA
13117 Points
Joined May 2009
You have another option I think.
Refer https://mukeshpatel.in/save-tax-the-smart-way/practical-tips-on-claiming-tax-refund/
and also u/s 155(14) assessment order can be revised to give tax credit within 4 yrs from the end of FY in which the order sought to be amended was passed. Please read about this section for more details.